Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Reviews of Mac OS Mobile: Effort to Make it Easy for Users
Mac OS mobile has been termed as a mobile time machine. That means you can have your Mac OS going when you are travelling. Reviewers point out that taking Mac’s OS mobile with you when you are on the move along with a laptop cannot be of much use. Specific application of the Mac OS mobile may only need a laptop. All other functions are compatible with the OS mobile and that can be performed with assistance of laptop. You should remember that OS is a combination of a computer and the phone in mini and mobile versions. The laptop is usable for specific applications and does not require to the drive or OS mobile. The OS mobile has novel feature when it continuous to function even though there is no backup volume. This is available and active only is the case of laptops and not for desktops.
The Mac OS mobile provides protection for data stored by users during their journeys. This is much more than what can be obtained by the mobiles auto save feature. Like any other backup system, the Mac OS mobile is also able to trace all changes in file. It is not just limited to specified applications. This function obviously creates an overlap when applied between mobile and desktop. In fact, to have two separate locations for the same file is not conducive to optimal use. This feature having been noticed is bound to come to the attention of Mac and the duplication may be ended in future versions. The lock screen has also been redesigned to meet the specified requirements.
It is obvious to everyone that competition for the mobile OS market is not just keen but fierce and makers of the systems have no holds barred fight to garner as big a market share as possible. Unfortunately, this market war is not being fought on technical grounds or superior features of the products of the contestants. However, the advertisements of different companies, paint different version to give the impression that they are trying to sell their superior products competing with other products that are inferior when compared with theirs. It has become obvious to everyone that this fight has nothing to do with the hardware used and everything to do with showmanship. But, the fact cannot be hidden that the quality is determined only by using software designed with great workmanship.
Any product newly introduced in the market should be user friendly. If the use is a bit complicated, complete guidelines should be provided along with the gadget so that the user will not have any difficulty in working with it. If it is easy to use the user will also recommend to his friends and that is marketing without spending money. This principle of user friendliness is fully evident in the case of Mac OS mobile. The software used though well designed has same flaws. However, the product has turned out to be a great one in the market because of its user friendly feature. It has become one more feather in the Mac’s cap.